Considering selling my MSX on ISA board

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By Jazzy

Champion (471)

Jazzy's picture

26-12-2012, 13:23

Hi guys,

I'm considering to sell my MSX on ISA board. It's complete with monitor and cartridge cable and a software disk labeled "PTC MSX-PC EMULATIE KAART". The cosmetical condition is great but unfortunately I was not able to test it.

The reason I'm considering to sell is that I can't actually use it and can use the cash to buy other MSX related items. Would also consider a trade offer, expecially looking for:
- CF interface
- robot interface with documentation (Lego?)
- Konami software on cartridge

Any ideas of a reasonalbe price? Sell on Ebay or here on the forum?

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By Meits

Scribe (5717)

Meits's picture

26-12-2012, 15:29

It's a collector's item, but nowadays more of a static one than one people can actually use (unless the got a real old pc).

By snakepow

Champion (291)

snakepow's picture

28-12-2012, 20:39

Hello, I'm interested on this item. I have a working old PC with ISA slot. I don't know about how much can be worth, I think the most important aspect is being an untested item, i.e., perhaps you buy or trade for it and when you have it in your hands and test, then it don't work. I'm afraid I can't offer much thing for this item being untested. Do you own a Konami title ? , like Shalom or King Kong or Nemesis 2 ? I can add to you more games or translated games to existing original Konami cartridges (also non-Konami titles), to trade for your MSX on ISA board.

Thank you

By SMC7O

Supporter (7)

SMC7O's picture

31-12-2012, 07:01

RARM8448,EBAY. randyarmstrong1@live. com;
i too have waited too long for a cf card and searched all day.
hans o. had sold what i was going to buy for this.
though i'll tell from my experience with chineese floppy emulators listed on ebay that if the drive is 720k only and
then the emulator drive is 720k only it shoulld work as a 99 floppy emulator on at least the the philips nms-8245 i
have and maybe WITH the hb floppy cable that hans o. has listed. it can't say 1.44k or it will store but never boot on 720k.
IF THIS ITEM OF YOURS IS WHAT ID CALL A [16BIT ISA CARD] LIKE AN AT SLOT IS I'D BE VERY INTERESTED IN IT AND
COULD PAY A REASONABLE PRICE FOR IT ON THE 3RD OF JAN,2012. LET ME KNOW, I WOULD GO A HUNDRED U.S. ON WHAT
DESCRIBED AS IS.
THANKS.R.R.ARMSTRONG (970)946-8402

By omonimo

Supporter (7)

omonimo's picture

06-12-2019, 20:11

7 years for a new reply Smile

I have this isa card but no video cable. I'm looking for someone that can send me pinout of board side and scart side
Thanks

By MSX4ever

Master (180)

MSX4ever's picture

07-12-2019, 13:03

I have a cable from CGA ISA card to the "PTC MSX-PC EMULATIE KAART".
I'll let you know the pinouts from the board side this week

By leonlas

Resident (45)

leonlas's picture

09-12-2019, 18:36

Hi!
I wonder what it looks like - this card. Can you insert photos? Maybe I will also start looking for such a nice device - a card. I have old computers from ISA, a few pieces ...

By omonimo

Supporter (7)

omonimo's picture

09-12-2019, 18:56

Hi. In the page of msx.org about the ptc-pc i read "RGB output (scart)" , "Analog RGB input for CGA pass through"
But the pc cga is digital and not analog. So it's possible to make a cable to connect the db9 output on the back of the ptc to the scart input on monitor/tv ?

By Grauw

Ascended (8621)

Grauw's picture

09-12-2019, 19:08

All video signals from the time were analog, just like RGB is. RGB is quite similar to CGA actually, both using a 15 kHz horizontal synchronisation signal. And for VGA it is 31 kHz, but otherwise it is also similar.

It is also not a well known feature, but CGA even has a 160×200 analog composite video output with 16 colours.

By omonimo

Supporter (7)

omonimo's picture

09-12-2019, 19:26

On wikipedia i read:
"The standard IBM CGA graphics card was equipped with 16 kilobytes of video memory and could be connected either to a dedicated direct-drive CRT monitor using a 4-bit digital (TTL) RGBI interface"

By Grauw

Ascended (8621)

Grauw's picture

09-12-2019, 19:57

I see, I saw R G and B and I assumed it would be more similar to VGA Smile. Rather it seems similar to the Pioneer PX-7’s RGB output. In that case, I guess there is some simple circuitry on the input to combine the RGB and I signals into an analog RGB signal like so. After that it can simply be passed through.

So I think the answer to your question is yes. MSX video output can’t be reproduced in the CGA 16-colour scheme that the digital output enforces, so the RGB output must be analog, 15 kHz, and can therefore be connected to SCART equipment.

(In this context digital is not referring to something akin to HDMI which uses a serial protocol, but rather that the component outputs are “either 0 or 1 and nothing inbetween”, which makes it just a restricted subset of analog output.)

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